Home / 129,736.84-194,604.09-40,990.34

Finding the Fourth Proportional to 129,736.84, 194,604.09 and 40,990.34

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Solution

The fourth proportional to 129,736.84, 194,604.09 and 40,990.34 is: 61,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,736.84 : 194,604.09 = 40,990.34 : x
  2. Step 2: Convert to fraction form
    129,736.84/194,604.09 = 40,990.34/x
  3. Step 3: Cross multiply
    129,736.84x = 194,604.09 × 40,990.34
  4. Step 4: Simplify right side
    129,736.84x = 7,976,887,814.49
  5. Step 5: Solve for x
    x = 7,976,887,814.49/129,736.84
  6. Step 6: Final answer
    x = 61,485.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.